CVE-2026-57496Public exploitNetwork attack vectorHinoki check available

Token disclosure via REST path traversal

Published Oct 15, 2026 · Updated Oct 15, 2026

Path traversal in Labs64 NetLicensing MCP Server before 0.1.8 allows remote authenticated users to read tokens via product lookups. The netlicensing_get_product handler interpolates product_number into a REST path without validation, allowing normalization to the token endpoint while its generic response wrapper skips token-specific redaction. A valid non-administrative API key suffices in stdio and HTTP deployments; recovering an administrative token grants account-wide read, write, and delete access.

CVSS severity9.6
Critical
EPSS probability0.35%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Path traversal in Labs64 NetLicensing MCP Server before 0.1.8 allows remote authenticated users to read tokens via product lookups. The netlicensing_get_product handler interpolates product_number into a REST path without validation, allowing normalization to the token endpoint while its generic response wrapper skips token-specific redaction. A valid non-administrative API key suffices in stdio and HTTP deployments; recovering an administrative token grants account-wide read, write, and delete access.

The record

CVE
CVE-2026-57496
Published
Oct 15, 2026
Updated
Oct 15, 2026
Vendor
Labs64
Product
NetLicensing MCP Server
Classifications
CWE-22, T1528
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 0.1.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Labs64 · NetLicensing MCP Serverversion=< 0.1.8

Published CVSS scores

9.6GitHub CNACVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1528Steal Application Access Token

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

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